
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Based on the previous questions, create a Queue class that uses the LinkedList for its data storage. Create the __init__, isEmpty, insert, remove, and size methods. Assume that LinkedList class has the add, removeFront and size methods defined.
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by stepSolved in 3 steps with 5 images

Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- linked_list_stack_shopping_list_manager.py This is a file that includes the class of linked list based shopping list manager. This class contains such methods as init, insert_item, is_list_empty, print_item_recursive_from_top, print_items_from_top, print_item_recursive_from_bottom, print_items_from_bottom, getLastItem, removeLastItem. In addition, this class requires the inner class to hold onto data as a linked list based on Stack. DO NOT use standard python library, such as deque from the collections module. Please keep in mind the following notes for each method during implementation: Init(): initializes linked list based on Stack object to be used throughout object life. insert_item(item): inserts item at the front of the linked list based on Stack. Parameters: item name. is_list_empty (): checks if the current Stack object is empty (ex. check if head is None). print_item_recursive_from_top(currentNode): a helper method to print linked list based on Stack item recursively. Note:…arrow_forwardStart this lab with the code listed below. The LinkedList class defines the rudiments of the code needed to build a linked list of Node objects. You will first complete the code for its addFirst method. This method is passed an object that is to be added to the beginning of the list. Write code that links the passed object to the list by completing the following tasks in order:1. Create a new Node object.2. Make the data variable in the new Node object reference the object that was passed to addFirst.3. Make the next variable in the new Node object reference the object that is currently referenced in variable first.4. Make variable first reference the new Node.Test your code by running the main method in the LinkedListRunner class below. Explain, step by step, why each of the above operations is necessary. Why are the string objects in the reverse order from the way they were added? public class LinkedList{ private Node first; public LinkedList() { first = null; } public Object…arrow_forwardLinked List, create your own code. (Do not use the build in function or classes of Java or from the textbook). Create a LinkedList class: Call the class MyLinkedList, (hint) Create a second class called Node.java and use it, remember in the class I put the Node class inside the LinkedList Class, but you should do it outside. This class should haveo Variables you may need for a Node,o (optional) Constructor Your linked list is of an int type. (you may do it as General type as <E>) For this Linked List you need to have the following methods: add, addAfter, remove, size, contain, toString, compare, addInOrder. This is just a suggestion, if you use Generic type, you must modify this Write a main function or Main class to test all the methods,o Create a 2 linked list and test all your methods. (Including the compare)arrow_forward
- For the Queue use the java interface Queue with the ArrayDeque classFor the Stack use the java Deque interface with the ArrayDeque classFor the LinkedList, use the java LinkedList class Also, when you are asked to create and use a Queue, you can use only those methods pertaining to the general operations of a queue (Enqueue: addLast, Dequeue: removeFirst, and peek() Similarly, when you are asked to create and/or use a stack, you can use only those methods pertaining to the general operations of a Stack (push: addFirst, pop:removeFirst, and peek() ) Your code should not only do the job, but also it should be done as efficiently as possible: fast and uses no additional memory if at all possible Questions Write a method “int GetSecondMax(int[] array)” . this method takes an array of integers and returns the second max value Example: if the array contains: 7, 2, 9, 5, 4, 15, 6, 1}. It should return the value: 9arrow_forwardQueueArray.java This file implements QueueInterface.java This file has * attributes of an array holding queue elements. An integer represents front * index, an integer for rear index, and an integer to keep track number of * elements in the queue. An overloaded constructor accepts an integer for * initializing the queue size, e.g. array size. An enqueue method receives an * object and place the object into the queue. The enqueue method will throw * exception with message "Overflow" when the queue is full. A dequeue method * returns and removes an object from front of the queue. The dequeue method * will throw exception with message "Underflow" when the queue is empty. A size * method returns number of elements in the queue. A toString method returns a * String showing size and all elements in the queue.arrow_forwardGiven main(), define an InsertAtEnd() member function in the ItemNode class that adds an element to the end of a linked list. DO NOT print the dummy head node.arrow_forward
- This task is to develop a software for a bookshop that handles the purchases through online. When the customer places order to buy a book, the shop will search for the specific item uponarrow_forwardIt is python language Write the code that creates a new Node class. It will store data and next attributes. You only need to create the __init__ method. data and next variables will have default values, both set to None. Assume you are using the Node class from the previous connection to create a LinkedList. You have the code below, create a method that removes the first node from the LinkedList. class LinkedList: def __init__(self): self.head = None Based on the code from the last two questions, create a new LinkedList. Add 2 values to the LinkedList (there is an add method that accepts data as an argument, called add). Then call the removeFront method created in the previous question. Based on the previous questions, create a Queue class that uses the LinkedList for its data storage. Create the __init__, isEmpty, insert, remove, and size methods. Assume that LinkedList class has the add, removeFront and size methods defined. Based on the LinkedList code already…arrow_forward* QueueArrayList.java This file implements QueueInterface.java This file has * only one ArrayList<T> type of attribute to hold queue elements. One default * constructor initializes the ArrayList<T> queue. An enqueue method receives an * object and place the object into the queue. The enqueue method does not throw * overflow exception. A dequeue method returns and removes an object from queue * front. The dequeue method will throw exception with message "Underflow" when * the queue is empty. A size method returns number of elements in the queue. A * toString method returns a String showing size and all elements in the queue. Please help me in javaarrow_forward
- Instruction: To test the Linked List class, create a new Java class with the main method, generate Linked List using Integer and check whether all methods do what they’re supposed to do. A sample Java class with main method is provided below including output generated. If you encounter errors, note them and try to correct the codes. Post the changes in your code, if any. Additional Instruction: Linked List is a part of the Collection framework present in java.util package, however, to be able to check the complexity of Linked List operations, we can recode the data structure based on Java Documentation https://docs.oracle.com/javase/8/docs/api/java/util/LinkedList.html package com.linkedlist; public class linkedListTester { public static void main(String[] args) { ListI<Integer> list = new LinkedList<Integer>(); int n=10; for(int i=0;i<n;i++) { list.addFirst(i); } for(int…arrow_forwardGiven the following program segment. Assume the node is in the usual info-link form with the info of the type int. (list and ptr are reference variable of the LinkedListNode type. What is the output of this program? list = new LinkedListNode (); list.info = 20; ptr = new LinkedListNode (); ptr.info = 28; ptr.link= null; list.link ptr; ptr = list; list = new LinkedListNode (); list.info = 55; list.link = ptr; ptr = new LinkedListNode (); ptr.info = 30; ptr.link= list; list = ptr; ptr = new LinkedListNode (); ptr.info = 42; ptr.link= list.link; list.link= ptr; ptr = list; while (ptr!= null) { } System.out.println (ptr.info); ptr = ptr.link;arrow_forwardLinked List, create your own code. (Do not use the build in function or classes of Java or from the textbook). Create a LinkedList class: Call the class MyLinkedList, (hint) Create a second class called Node.java and use it, remember in the class I put the Node class inside the LinkedList Class, but you should do it outside. This class should haveo Variables you may need for a Node,o (optional) Constructor Your linked list is of an int type. (you may do it as General type as <E>) For this Linked List you need to have the following methods: add, addAfter, remove, size, contain, toString, compare, addInOrder. This is just a suggestion, if you use Generic type, you must modify this Write a main function or Main class to test all the methods,o Create a 2 linked list and test all your methods. (Including the compare)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education

Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education

Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON

Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON

C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON

Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning

Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education